"battery lifespan" is a correct and usable phrase in written English.
You can use it to describe how long a battery lasts before it must be replaced, typically in the context of a product or device. For example: "This phone has a long battery lifespan of up to 2 days."
The touchpad is a little over-sensitive, and our review model crashed a few times, but the battery lifespan comes in at a seriously useful 24 hours.
And specifically with battery lifespan.
The DOD is selected 50%% for longevity of battery lifespan.
Fujitsu promises a battery lifespan of around 40 hours.
Generally, battery lifespan depends on the number of cycles and depth of discharge (DOD).
The battery lifespan for the Ubuntu -powered device is 10 hours.
Their addition is further justified through the current desire for mobile and wearable computing devices, which demand energy efficiency to maximise finite battery lifespans.
This new range of Eee PC™ are also equipped with the exclusive Super Hybrid Engine technology that can provide longer battery lifespans of up to 7.8 hours*, exclusive web storage and high speed connectivity**, and large displays for easy viewing.
The most important variable that must be estimated is the batteries lifespan, which depends on the operating conditions (charge/discharge cycles, corrosion, state of charge, etc).. Previous works used classical methods for the estimation of batteries lifespan, which can be too optimistic in many cases, obtaining a net present cost of the system much lower than in reality.
Equipment suffered high failure rates and batteries worked for shorter periods in the cold; operators modified their scientific instruments to allow the battery packs to be carried under their coats to extend the batteries' lifespan.
I read books on my Kindle, which was lighter and had a battery life longer than the lifespan of a gnat.
